40 Years~

An unchanging night covers the sky, an endless white desert covers the ground. The tree-like objects are not plants, but rather quartz-like minerals.

A landscape that seemingly never-ending white desert, with a multitude of dunes, littered with boulders.

The moon is on the opposite lunar phase; the vast desert seems to lack any bodies of water and contains rocky formations.

In the distance a shadow walking calmly while silently looking forward, behind him is a strange creature, resembling a cat but half of it resembles a dog.

Wearing a strange mask while following the black shadow walking silently as if they walk in the park.

Suddenly people start to appear, wearing a bull-shaped skull, a customized uniform, which is a long sleeve jacket with a black line starting at the high collar and curving down to his right hip. He also wears a black sash, white hakama, and black gloves.

Behind that bull mask person is a group of people wearing the same uniform but different mask, they all wear human skull masks.

"Are you the Arrancar that rampaged for 40 years here, killing hundreds of thousands of Menos-Grande and some Exequias who go here to investigate?" The bull mask person asks.

The man only looked at them, not showing any of his facial features hiding it inside of a tattered cloak.

"Can I still speak? Or are you a low-level Hollow with high intense Reiatsu?" The Bull-mask asks.

The man only silent looking at them, while the cat dog behind him is angry, roaring at them as if giving them warning not to get closer.

"What a waste, well, we will go back after you develop your own intelligence, take this and your evolution will go faster," The Bull mask said, throwing a vial with strange liquid inside.

"Let's go," The Bull mask said to them together and disappeared, but his voice still lingering around," Frink it, it will help your evolution, my Lord needs a ferocious Arrancar like you���.."

After few minutes, the man bend and pick the vial then continue to walk inside of the Forest of Menos

The Forest of Menos is an area below the surface of Hueco Mundo's desert where the average Hollow hides from the Arrancar.

The forest is filled with large trees made of a silvery quartz substance. These trees extend to the surface and dot the landscape of the desert in Hueco Mundo

Countless Gillian class Hollow live here and follow the commands of the Guardian of the Forest of Menos and his followers.

After walking for almost an hour, they both arrive in a cave hidden inside by a large boulder, the man walks following the cat-dog creature.

Then man removes his tattered cloak and removes the hollow mask that he is wearing, a tall handsome young-teen with blood-red eyes, elegant eyebrow, long eyelashes, chisel-like face, white porcelain skin, and long silky white hair that reaches up to his waist.

"Catdog, you can go out now and find your food, and remember to go back after you are full," the young man said.

"Meow~ Arf~"

Then the catdog hollow ran outside and disappeared from the man's view, but the man did not look back and continued what he was doing.

He takes the pitcher and gets a glass of water, after that he walks inside of a chamber and starts to practice.

"I hope I succeed this time."

"Gate of the four worlds, an unknown path, an endless void, and the right direction." He chants.

"Gate from the underworld, gate of the soul, gate of life and gate of the purgatory, open the almighty door,"

"Dokodemo Door"

*Bzzzz!

*Bang!

A rip suddenly appear in the ceiling then a golden door fall in front of the young man, seeing the door the young man smiled and said," Finally, the way back home,"

The young man walks back and starts to take all the things inside of his hideout, from daily necessities and from strange bones and ore and some strange things.

He cleaned the whole place leaving nothing and removing all the evidence that he stayed in this place.

After that, he made numerous seals and spells to conceal the whole hiding place and eventually sit in the entrance to wait for his pet.

After a few minutes, he heard a monstrous roar and a large explosion not far from where he was sitting, then a large monster appeared in front of him.

With a muscular body full of jet black hair, a claw that can easily tear anything, with 3 heads and a strange mast to each head.

Every breath comes out as a concentrated black Reiatsu, the young man looks at the monster in front of him and says," Catdog, change back, we are going to leave this place."

"Roar!!"

The monster Cerberus starts to shrink until it transformed to an idiotic catdog that following the man.

The man stand up while the catdog follow him, after they arrive in the golden door, the man sigh and open it," I hope they can still remember me,"

The young man is Xin who lives in the Hueco Mundo, after the last battle to Aizen, Xin who tries to save Momo from falling to Garganta.

Who thought that when he finally saved Momo he only discovered that he was holding a strange hollow that almost killed him, after that he fell deeper and deeper into Garganta and finally fell in the Hueco Mundo.

After 40 years of developing space and void type kido, he finally successfully opened a door back home.

But there's a problem, the door is not accurate, he doesn't know what is inside of the opposite side of the door, but still it's better if he appears back to Soul Society.

"Let's go," Xin opens the door and walks inside while his pet catdog follows him closely, when they both come inside, the golden gate vanishes leaving the hideout empty.

Just couple of step, Xin narrative in front of the end of the door, he opens it and hoping that he arrive in Soul society.

But who thought that after he came out, everything was different, a lively atmosphere and strange noise everywhere, even Catdog shaking from fear hid behind him.

Xin looked around and thought,' Isn't this the human world? who thought that the door bring me here,'